/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package frontend;

import hibernate.impl.GroupDAOImpl;
import hibernate.impl.UserDAOImpl;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import modelmapping.Group;
import modelmapping.User;
import util.PentaUtil;
import validator.FormValidator;
import validator.ValidatorError;

/**
 *
 * @author Valentina
 */
public class UserUpdateServlet extends HttpServlet {

    protected List myErrors = new ArrayList();
    protected List mySuccesMsg = new ArrayList();

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        String strUserId = request.getParameter("id");
        String strIdGroup = request.getParameter("idGroup");
        String userName = request.getParameter("name");
        String userLogin = request.getParameter("login");
        String userPassword = request.getParameter("password");

        myErrors.clear();
        mySuccesMsg.clear();

        try {
            //Validation 
            myErrors = FormValidator.verifyRequiredField(userName, "Name");
            myErrors = FormValidator.verifyRequiredField(userLogin, "Login");
            myErrors = FormValidator.verifyPasswordField(userPassword);

            UserDAOImpl userDAOImpl = new UserDAOImpl();
            
            if (strUserId == null) { // ADD
                myErrors = verifyUnicField(userLogin, "Login");
            }

            if (myErrors.isEmpty()) {
                
                User user = null;

                if (strUserId == null) { // ADD
                    user = new User();
                } else { //Update
                    user = (User) userDAOImpl.retrieve(Long.parseLong(strUserId));
                }

                user.setName(userName);
                user.setLogin(userLogin);
                user.setPassword(userPassword);
                
                Group group = new Group();
                GroupDAOImpl groupDAOImpl = new GroupDAOImpl();
                group = (Group) groupDAOImpl.retrieve(Long.parseLong(strIdGroup));
                user.setIdgroup(group);

                if (strUserId == null) { // ADD
                    Long id = userDAOImpl.create(user);
                    setCreateMessages(request,id);
                } else { //Update
                    Boolean state = userDAOImpl.update(user);
                }

                PentaUtil.RequestUtil(request, response, "UserServlet");
                
            } else {

                PentaUtil.getGroupLits(request);

                request.setAttribute("name", userName);
                request.setAttribute("login", userLogin);
                request.setAttribute("password", userPassword);

                request.setAttribute("myErrors", myErrors);
                PentaUtil.RequestUtil(request, response, "WEB-INF/frontend/UserUpdate.jsp");
            }
        } catch (NumberFormatException nfe) {
            myErrors.add(new ValidatorError("numberFormatError", "Number Format Error"));
            PentaUtil.setError(request, response, myErrors);
        } catch (Exception e) {
            myErrors.add(new ValidatorError("systemError", "System Error"));
            PentaUtil.setError(request, response,myErrors);
        }
    }

    private List verifyUnicField(String value, String filedName) {

        UserDAOImpl userDAOImpl = new UserDAOImpl();

        if (!userDAOImpl.verifyIfUnicField(value)) {
            myErrors.add(filedName + " exist in the system");
        }

        return myErrors;
    }

    private void setCreateMessages(HttpServletRequest request, Long id){
        if(id>0){
            mySuccesMsg.add("Record Added Successfully");
            request.setAttribute("mySuccesMsg", mySuccesMsg);
        }else{
            myErrors.add("Error:: Record was not added");
            request.setAttribute("myErrors", myErrors);
        }
    }
       
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}